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SVETLANKA909090 [29]
3 years ago
11

You are going on an expedition to dig for dinosaur fossils. In digging you come across a small trunk left by another archeologis

t. In the trunk is a paper that lists how deep you need to dig to reach dinosaur fossils. Unfortunately, something spilled on part of the paper and it is damaged.
Using your knowledge of mathematics, find the missing numbers in the
chart. Write a generalization or rule to determine any number of feet you
must dig given the number of years.

If the Jurassic period was 200 million years ago, how deep would you need
to dig at this location to uncover fossils of that era? Explain why your
answer is or is not reasonable.

Mathematics
1 answer:
Rainbow [258]3 years ago
6 0

Answer:

200,000 feet to dig

Step-by-step explanation:

We use a ratio for this problem

30,000         200,000,000

-----------   =   ---------------------

30                        x

200,000,000 * 30

----------------------------  = 200,000 feet to dig

30,000

This answer is reasonable because 200,000,000 years ago was a long time ago so then the person must dig a reasonable amount of dirt. So then 200,000 feet is reasonable.

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An integer is chosen between 0 and 100. What is the probability that it is divisible by 7?
IgorC [24]
Assuming 0 and 100 are included in the possible choices:

There are \left\lfloor\dfrac{101}7\right\rfloor=14 multiples of 7 between 0 and 100, so there is a \dfrac{14}{101}\approx0.1386 probability of choosing a multiple of 7.
8 0
3 years ago
At what time the sum Rs. 5000 will be doubled at the interest<br>of 10% per annum?​
FromTheMoon [43]

Answer:

Time= 10 years

Step-by-step explanation:

Let total time=t

Initial Amount=5000

Final Amount=10000

Total interest = Final Amount - Initial Amount

                      =10000-5000\\=5000

Simple Interest =\frac{Initial Amount\times time\times rate}{100} \\\\5000=\frac{5000\times t \times 10}{100}\\\frac{t}{10} =1\\t=10 \ years

7 0
3 years ago
A box of staples contains 6 x 103 staples and weighs 12 oz. How much does one staple
omeli [17]

Answer:

2 * 10^-3 oz

Step-by-step explanation:

Given that:

Number of staples per box = 6 * 10^3

Weight of staple box = 12 oz

Weight per staple = (weight of staple box / number of staples per box)

Weight per staple = 12 / 6 * 10^3

Weight per staple = 12 / 6 * 1000

= 12 / 6000

= 0.002 oz

= 2 * 10^-3 oz

6 0
3 years ago
Please solve the questions
Wewaii [24]

Answer:

Step-by-step explanation:

For a

2 + x = 15

x = 15 -2

x = 13

For B

x - 12 = 14

x = 12 + 14

x = 26

For C

3x = 12

x = 12/3

x = 4

Hope it helps:)

5 0
3 years ago
Figure 1 and figure 2 are show on the coordinate plane below.
anzhelika [568]

Answer:

Which series of transformations can be used to prove that figure 1 is congruent to figure 2?

Step-by-step explanation:

rotation of 90° counterclockwise about the origin and then translation 5 units left

6 0
3 years ago
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